Improvement in self-closing cocks



UNITED STATES PATENT OFFICE,`

NATHANIEL JENKINS, OF BOSTON, MASSAOHSETTS.

I IMPRovr-:MENT IN sELF-oLoslNe oocKs.

Specification foriningpart of Letters Patent No. 48,407, dated June 27, 1865.

To all 'whom it may concern: t

Be it known that I, NA'rHANIEL JENKINs,

of Boston, in the county of Snft'olk and State 'The nature of my invcntion consists in op-` ening a self-closing faucet by means of a screwfollower, H, whose threads are so inclined that the pressure of the water and the spring O 'under the valve K will be sufficient to rotate said follower, and thereby close` the faucet, while at the same time, -by means of said inclined screw, 'it will be easy to open the valve and hold the same open so long as it maybe required to let the water run.

My invention further consists in combining with said self-closing` valve and screw-follower a swivel, P, to prevent the twisting a'nd trictiou of the valve, which would otherwise occur.

To enable others skilled in the art to make and usc my improvement, I will now proceed to describe the construction and operation of the same.

Fig. 1 represents a longitndinal central `vertical section of the faucet, in which A is the inlet, B the outlet7 and O the valYe-chamber, confined to the center of the faucet by means of the screw e.

d is the valve-seat, and K is the \'a'lve,of rnbher or other suitable material, the bottom of which has a projecting ring or flange, a, which enters a corresponding groove in the top of the metallic base L, whereby the two are confined together. i

Q is a round shank, extcnding downward from the center of the base Ilfarouiid which is placed the spiral spring O, the design of said springbeing to force the valve K npward i to itsseat d, where it will he held by the pressure of the water.

H is the follower, passin g through the cap F of the chamber Y down to the diaphragm G, which is confined between the bottom of the cap F and the top of the chamber Y by means of the screw i, said diaphragm answerng also as a packing for the cap. This follower H is provided with a coarse screw thread orthreads, j, the inclination of which 'is such that a partialrotation of the same will entirely open the valve, while the upward pressure of the spring O and the water under the valve is sufficient to overco me the friction of said screw-follower and throw it up, thus making a self-closing faucet. The inclination of the scre'w-thread j should be proportioned to the head of water under which the faucetis to be used. The less the head of water the greater the inclination of the thread should be, and vice versa.

P is the cylindrical swivel, the upper end of which is turned smaller and provided with a screw, f, which enters the cylinder X, between which the diaphragm G is confined, as clearly shown in Fig. l; or the diaphragm, being elastic, inay be confined to the swivei P by stretching it over the same, and allow'ing it to snap or contract into the slot x, as represented in Fig. 2. This latter cylinder, X, turns freely in its .bearing in the lower end of the follower, being kept from dropping out by means of the pin a., the inner end of which enters an annu- Iar slot in the same, or it may be supported entirely by the dia-phragm, as in Fig. 2. bottom of the swiyel P is enlarged and concave, so as to conform to the shape of the top of the valve K, on which it rests, as represented in the drawings.

What I claim as new, and desire to secure 'by Letters Patent, is-

1. Thescrew-followerH,in combination with the valve of a self-closing` faucet, substantially as set forth, and for the purpose described.

2. The combination of the swivel P, screwfollower H, valve K, and spring O, substantially as and for the purpose descrihed.

NATHL. JENKINS.

Witnesses:

N. AMES,

GEo. R. '(JLARKE.

The 

